Assuming the pre-surgery length was something normal (making it a rounding error from this point on) and the average 3.5" long flaccid penis takes 130 mL of blood to achieve a 5.17" erection (4.59" in circumference), those extra ~2.1 billion inches would require 5.4 million-ish liters of blood to fill. If those are 2.1 billion flaccid inches, call it about 8 million liters.

Average total blood volume for an adult human is 4.5 to 5.6 liters so we're going to need more. An Olympic swimming pool is 50x25 meters with a minimum depth of 2 meters. That's 2.5 million liters. It'll take two of those full of blood and a little extra to get things up and running.

Somewhere in that ballpark anyway, I think. Don't rely on this for medical purposes. Average dick-mensions and pool specifications from Wikipedia, blood fill numbers from a Healthline article.

That would make long distance relationships easier.

Int underflow, but with a signed int32

Huge if true

You get a boner and die.

53.34Mm for the correct standard using amongst y'all.

Every time he gets an erection, NASA tries to use it to lift supplies to the ISS.

You get used to it. Hang in there, I promise it gets better/easier.

I recently got addicted to this game, its so fun

Inches makes it seem more impressive than it is--that's like only around 30 miles or so.

Wtf

Wow, that's almost enough to get past your mom's fat rolls!

If your penis was that long, it would be large enough to fill the entire physical universe. It would be so massive, that it would immediately collapse into a penile singularity, creating a new penis-verse (the cosmological phenomenon, not the gay bar by my house). I know this because I am a penis physicist, also known as a peenysicist. And if you believe me, that’s your own fault.